1. constants::codata
    CODATA Recommended Values of the Fundamental Physical Constants: 2018
    csv| xlsx| json| ndjson| rda| rds
    data.frame|354 x 6
  2. constants::codata.cor
    CODATA Recommended Values of the Fundamental Physical Constants: 2018
    csv| json| rda| rds
    matrix|354 x 354
  3. errors::GUM.H.2
    Datasets from the Guide to the Expression of Uncertainty in Measurement (GUM)
    csv| xlsx| json| ndjson| rda| rds
    data.frame|5 x 3
  4. errors::GUM.H.3
    Datasets from the Guide to the Expression of Uncertainty in Measurement (GUM)
    csv| xlsx| json| ndjson| rda| rds
    data.frame|11 x 2